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\input{preamble-standalone.ltx}
\begin{document}
% Ex. No. 116 (Section 16.0.1 : Option \tkzname{medial} or \tkzname{centroid} )
\begin{tikzpicture}[rotate=90,scale=.75]
\tkzDefPoints{0/0/A,6/0/B,0.8/4/C}
\tkzDefTriangleCenter[centroid](A,B,C)
\tkzGetPoint{M}
\tkzDefSpcTriangle[medial,name=M](A,B,C){_A,_B,_C}
\tkzDrawPolygon[color=blue](A,B,C)
\tkzDrawSegments[dashed,red](A,M_A B,M_B C,M_C)
\tkzDrawPolygon[color=red](M_A,M_B,M_C)
\tkzDrawPoints(A,B,C,M)
\tkzDrawPoints[red](M_A,M_B,M_C)
\tkzAutoLabelPoints[center=M,font=\scriptsize]%
(A,B,C,M_A,M_B,M_C)
\tkzLabelPoints[font=\scriptsize](M)
\end{tikzpicture}
\end{document}
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